Eye Chart Examination (Visual Acuity Test) An eye chart examination is a simple, quick test used to check how clearly you can see at a distance. 🔍 What it tests • Visual acuity (sharpness of vision) • Detects near-sightedness, far-sightedness, and astigmatism • Helps decide if glasses or contact lenses are needed 👁️ How it’s done • You stand or sit 6 meters (20 feet) away from the chart • One eye is covered at a time • You read letters from largest to smallest • The smallest line you can read